Figure 9.

Uncompensated contributions of LCI1 (B, E) and LCIB (C, F) in an lcia mutant background at pH 6 (open squares), pH 7.3 (closed squares) and pH 9 (red circles) plotted against calculated CO₂ concentration (A–C) and HCO₃⁻ concentration (D–F). The CO₂ and HCO₃⁻ concentration ranges covered are 0–25 μM and 0–120 μM, respectively. A and D are the original lcia mutant O₂ evolution rates. Note that the Y-axis scales on the original O₂ evolution plots (A, D) are different than those on the uncompensated contribution plots (B, C, E, F). Uncompensated contributions were calculated by subtracting O₂ evolution rates of the mutant from its background strain: LCI1 in lcia = lcia-l1a; LCIB in lcia = lcia-lab. l1a is the LCI1/LCIA double mutant and lab is the LCIA/LCIB double mutant